S033 
CAUTION: 
Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with 
metal, which might result in spattered metal, burns, or both. 
About this task
Attention: 
•  Read “Safety inspection checklist” on page 43 and “Installation Guidelines” on page 41 to ensure that you 
work safely.
•  Turn off the server and peripheral devices, and disconnect the power cords and all external cables, see 
“Power off the server” on page 99.
Note: To install rails to rack, see the Rail Installation Guide at 
https://thinksystem.lenovofiles.com/help/topic/ 
rail_options/rail_options_tower_servers.html
.
Watch the procedure 
A video of this procedure is available at YouTube: https://www.youtube.com/playlist?list=PLYV5R7hVcs- 
AU3iY3F7lq3qfqr5caGbIu
.
Procedure
Step 1.  Install the four brackets to the tray as illustrated. 
Figure 76. Installing the brackets to the tray
Step 2.  Install the four rubber safety pads to the tray as illustrated. 
96
ThinkSystem ST50 V2 Setup Guide